blocks|key|1151045|text|我也遇到过同样的问题，有趣的原因是:我的猜测是您希望System.Web.Mvc位于列表中的System.Web之下。但是这个列表并不是按字母顺序排列的。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1151046|首先对列表进行排序，然后在System.Web附近查找。|1151047|entityMap^0|Q|E|1A|A|0|D|A|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]|$9|M|A|N|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|O|8|@$9|P|A|Q|B|C]]|D|@]|E|$]]|$1|H|3|-4|5|6|7|R|8|@]|D|@]|E|$]]]|I|$]]

I have had the same problem and here is the funny reason: My guess is that you expect <code>System.Web.Mvc</code> to be located under <code>System.Web</code> in the list. But the list is not alphabetical.

First sort the list and then look near the <code>System.Web</code>.

blocks|key|1151126|text|这对于Visual+Studio2012来说已经改变了(我知道最初的问题是VS2010，但标题仍然会在搜索中出现)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1151127|当您创建一个VS2012+MVC项目时，system.web.mvc被放在与解决方案对等的packages文件夹中。默认情况下，这将在web项目中引用，您可以在那里找到确切的路径)。|1151128|如果你想在第二个项目中引用它(比如一个带有过滤器或其他属性的支持.dll+)，那么你可以从那里引用它。|1151129|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|H|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|I|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|J|8|@]|9|@]|A|$]]|$1|F|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|G|$]]

This has changed for Visual Studio 2012 (I know the original question says VS2010, but the title will still hit on searches).

When you create a VS2012 MVC project, the system.web.mvc is placed in the packages folder which is peer to the solution. This will be referenced in the web project by default and you can find the exact path there).

If you want to reference this in a secondary project (say a supporting .dll with filters or other attributes), then you can reference it from there.

blocks|key|1151202|text|最好的方法是使用NuGet包管理器。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1151203|只需更新下面的MVC包，它就可以工作了。|1151204|​|1151205|📷|atomic|offset|length|1151206|1151207|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/7b74a6c03a59714e21489b9f6d8a450a.jpeg|imageAlt^0|0|0|0|0|1|0|0|0^^$0|@$1|2|3|4|5|6|7|U|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|V|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|W|8|@]|9|@]|A|$]]|$1|F|3|G|5|H|7|X|8|@]|9|@$I|Y|J|Z|1|10]]|A|$]]|$1|K|3|E|5|6|7|11|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|12|8|@]|9|@]|A|$]]]|M|$N|$5|O|P|Q|A|$R|S|T|-4]]]]

Best way is to use NuGet package manager. 

Just update the below MVC package and it should work. 

<img src="https://i.stack.imgur.com/SKtro.jpg" alt="enter image description here">

blocks|key|936926|text|我通过搜索"mvc“解决了这个问题。该System.Web.Mvc出现在搜索结果中，尽管它未包含在列表中。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|936927|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

I solved this problem by searching "mvc". The System.Web.Mvc appeared in search results, despite it is not contained in the list.

blocks|key|936975|text|它可以单独安装，它不包括在框架中，选择标签列表“扩展”，它存在和更多的其他库，所有都可以不需要使用旧库等，存在旧的20+30和4001|type|unstyled|depth|inlineStyleRanges|entityRanges|data|936976|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

it can be installed separated,
and it's not included in framwork,
choose tab list "extensions" and it exists there are and more other libs,
all is ok not needed to used old libs etc,
exists old 20 30 and 4001

blocks|key|937078|text|如果你在Visual+Studio2017中遇到了这个问题，那么很有可能你正在处理一个在VS的早期版本中创建的MVC4项目，该项目的引用提示路径指向C:\Program+Files+(x86)\Microsoft+ASP.NET。Visual+Studio+2017不再安装此目录。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|937079|我们通常通过在2017实例旁边安装一个Visual+Studio+2015副本来解决这个问题，并在上面的路径中安装必要的库。然后，我们更新受影响项目中的所有引用，我们就可以开始了。|937080|entityMap^0|22|14|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|M|8|@]|D|@]|E|$]]|$1|H|3|-4|5|6|7|N|8|@]|D|@]|E|$]]]|I|$]]

If you got this problem in Visual Studio 2017, chances are you're working with an MVC 4 project created in a previous version of VS with a reference hint path pointing to <code>C:\Program Files (x86)\Microsoft ASP.NET</code>. Visual Studio 2017 does not install this directory anymore.

We usually solve this by installing a copy of Visual Studio 2015 alongside our 2017 instance, and that installs the necessary libraries in the above path. Then we update all the references in the affected projects and we're good to go.

blocks|key|1151484|text|我在VS+2012中没有得到System.Web.Mvc，但我在VS+2013中得到了它。使用AddReference对话框，|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1151485|📷|atomic|offset|length|1151486|​|1151487|或者，您可以在您的项目路径中找到以下内容：|1151488|YourProjectName\packages\Microsoft.AspNet.Mvc.5.0.0\lib\net45\System.Web.Mvc.dll|1151489|entityMap|0|IMAGE|mutability|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/523f6c14465d1e806b992b06fe2ca42e.jpeg|imageAlt^0|0|0|1|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|V|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|W|8|@]|9|@$E|X|F|Y|1|Z]]|A|$]]|$1|G|3|H|5|6|7|10|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|11|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|12|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|13|8|@]|9|@]|A|$]]]|N|$O|$5|P|Q|R|A|$S|T|U|-4]]]]

I didn't get System.Web.Mvc in VS 2012 but I got it in VS 2013.
Using AddReference Dialog,
<a href="https://i.stack.imgur.com/o62Fa.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/o62Fa.jpg" alt="enter image description here"></a>

Or, You can find this in your project path,

YourProjectName\packages\Microsoft.AspNet.Mvc.5.0.0\lib\net45\System.Web.Mvc.dll

Using C#, Visual Studio 2010.

There is a namespace called <a href="http://msdn.microsoft.com/en-us/library/system.web.mvc.aspx" rel="noreferrer">System.Web.Mvc</a> documented on MSDN. The documentation for all the types in that namespace says that they are in <code>System.Web.Mvc.dll</code>.

However, when I go to Add Reference, “.NET” tab, this assembly is missing from the list. Why?

Why is System.Web.Mvc not listed in Add References?

Visual Studio

包管理器

使用C#，Visual Studio2010。在MSDN上有一个名为的命名空间文档。该命名空间中所有类型的文档都说明它们在System.Web.Mvc.dll中。但是，当我转到Add Reference的“.NET”选项卡时，列表中缺少此程序集。为什么？

问为什么在Add References中没有列出System.Web.Mvc？
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